advanced
Article Contents
Turn off MathJax
Related articles
Article Navigation >  International Journal of Minerals, Metallurgy and Materials  > 2020 > Accepted Manuscript

Cite this article as:
shu

Research Article

Graphene oxide wrapped magnetic nanoparticles composites induced by SiO2 coating with excellent regenerability

+ Author Affiliations
  • Received: 20 September 2020; Revised: 19 November 2020; Accepted: 20 November 2020; Available online: 26 November 2020
  • Graphene oxide (GO) wrapped Fe3O4 nanoparticles were prepared by coating the Fe3O4 nanoparticles (NPs) with SiO2 layer, and then modifying by amino groups, which interact with the GO nanosheets to form covalent bonding. The SiO2 coating layer plays a key role in integrating the magnetic nanoparticles with the GO nanosheets. Effect of the amount of SiO2 on the morphology, structure, adsorption and regenerability of the composites was studied in detail. Results suggest that an appropriate SiO2 layer can effectively induce the GO nanosheets to completely wrap the Fe3O4 NPs, forming a core-shell Fe3O4@SiO2@GO composites where Fe3O4@SiO2 NPs were firmly encapsulated by GO nanosheets. As an adsorbent to remove Pb(II) cations from waste water, the optimized Fe3O4@SiO2@GO sample exhibits a high saturated adsorption capacity of 253 mg•g-1, and the adsorption process is well fitted by Langmuir adsorption model. Notably, it displays an excellent regeneration, maintaining ~90% adsorption capacity for 5 cycles, while other samples decrease their adsorption capacity rapidly. This work could provide a theoretical guidance to improve the regeneration of the GO based adsorbents.
  • 加载中

    •  

  • [1] Xiao-guang Liu,Qiu-shuo Mao,Yue Jiang,Yan Li,Jia-lin Sun, and Fei-xue Huang, Preparation of Al2O3–SiO2 composite aerogels and their Cu2+ absorption properties, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-020-2111-3
    [2] Yu Han, Shuang-yu Liu, Lei Cui, Li Xu, Jian Xie, Xue-Ke Xia, Wen-Kui Hao, Bo Wang, Hui Li, and  Jie Gao, Graphene-immobilized flower-like Ni3S2 nanoflakes as a stable binder-free anode material for sodium-ion batteries, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-018-1550-6
    [3] Shi-na Li, Rui-xin Ma, and  Cheng-yan Wang, Solid-phase synthesis of Cu2MoS4 nanoparticles for degradation of methyl blue under a halogen-tungsten lamp, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-018-1574-y
    [4] Sheng-chao Duan, Chuang Li, Han-jie Guo, Jing Guo, Shao-wei Han, and  Wen-sheng Yang, Investigation of the kinetic mechanism of the demanganization reaction between carbon-saturated liquid iron and CaF2-CaO-SiO2-based slags, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-018-1584-9
    [5] Revanna Kullaiah, Liju Elias, and  Ampar Chitharanjan Hegde, Effect of TiO2 nanoparticles on hydrogen evolution reaction activity of Ni coatings, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-018-1593-8
    [6] Xiang Zeng, Jie Teng, Jin-gang Yu, Ao-shuang Tan, Ding-fa Fu, and  Hui Zhang, Fabrication of homogeneously dispersed graphene/Al composites by solution mixing and powder metallurgy, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-018-1552-4
    [7] Peng Zhou, Jun-hong Chen, Meng Liu, Peng Jiang, Bin Li, and  Xin-mei Hou, Microwave absorption properties of SiC@SiO2@Fe3O4 hybrids in the 2-18 GHz range, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-017-1464-8
    [8] Ying Xu, Zhi-peng Yuan, Li-guang Zhu, Yi-hua Han, and  Xing-juan Wang, Shear-thinning behavior of the CaO-SiO2-CaF2-Si3N4 system mold flux and its practical application, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-017-1500-8
    [9] Zuo-li Li, Jun Zhao, Jia-lin Sun, Feng Gong, and  Xiu-ying Ni, Reinforcing effect of graphene on the mechanical properties of Al2O3/TiC ceramics, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-017-1533-z
    [10] J. Celina Selvakumari, M. Ahila, M. Malligavathy, and  D. Pathinettam Padiyan, Structural, morphological, and optical properties of tin(IV) oxide nanoparticles synthesized using Camellia sinensis extract:a green approach, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-017-1494-2
    [11] Jian-fang Lü, Zhe-nan Jin, Hong-ying Yang, Lin-lin Tong, Guo-bao Chen, and  Fa-xin Xiao, Effect of the CaO/SiO2 mass ratio and FeO content on the viscosity of CaO-SiO2-“FeO”-12wt%ZnO-3wt%Al2O3 slags, Int. J. Miner. Metall. Mater., https://doi.org/10.1007/s12613-017-1459-5
  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索
Cite this Article
PDF
XML

Share Article

Article Metrics

Article views(181) PDF downloads(1) Cited by()

Proportional views

Graphene oxide wrapped magnetic nanoparticles composites induced by SiO2 coating with excellent regenerability

  • Corresponding authors:

    Zhong-liang Hu    E-mail: david10103@sina.com

    Zhao-hui Li    E-mail: lzh69@xtu.edu.cn

  • 1. College of Metallurgy and Material Engineering, Hunan University of Technology, Zhuzhou 412007, China
  • 2. College of Chemistry, Xiangtan University, Xiangtan 411105, China
  • 3. Institute of Fundamental Mechanics and Materials Engineering, Xiangtan University, Xiangtan 411105, China
    Received: 20 September 2020
    Revised: 19 November 2020
    Accepted: 20 November 2020
    Available online: 26 November 2020

Abstract: Graphene oxide (GO) wrapped Fe3O4 nanoparticles were prepared by coating the Fe3O4 nanoparticles (NPs) with SiO2 layer, and then modifying by amino groups, which interact with the GO nanosheets to form covalent bonding. The SiO2 coating layer plays a key role in integrating the magnetic nanoparticles with the GO nanosheets. Effect of the amount of SiO2 on the morphology, structure, adsorption and regenerability of the composites was studied in detail. Results suggest that an appropriate SiO2 layer can effectively induce the GO nanosheets to completely wrap the Fe3O4 NPs, forming a core-shell Fe3O4@SiO2@GO composites where Fe3O4@SiO2 NPs were firmly encapsulated by GO nanosheets. As an adsorbent to remove Pb(II) cations from waste water, the optimized Fe3O4@SiO2@GO sample exhibits a high saturated adsorption capacity of 253 mg•g-1, and the adsorption process is well fitted by Langmuir adsorption model. Notably, it displays an excellent regeneration, maintaining ~90% adsorption capacity for 5 cycles, while other samples decrease their adsorption capacity rapidly. This work could provide a theoretical guidance to improve the regeneration of the GO based adsorbents.

    HTML

Catalog

    About IJMMM

    For Authors

    Browse IJMMM

    Copyright © 2019 Editorial Office of International Journal of Minerals, Metallurgy and Materials 京ICP备07030729号

    Supported by: Beijing Renhe Information Technology Co. Ltd  Email: info@rhhz.net  

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return